linux-kernel - Re: [PATCH 04/17] spi: dw: Cleanup generic DW DMA code namings

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Message-ID: <CAHp75VcRN=kDRteK9KHPRCLqTSNEcCFH8q3OKGvt5YL5D44iyQ@mail.gmail.com>
Date:   Wed, 13 May 2020 00:37:50 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Serge Semin <fancer.lancer@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Georgy Vlasov <Georgy.Vlasov@...kalelectronics.ru>,
        Ramil Zaripov <Ramil.Zaripov@...kalelectronics.ru>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Burton <paulburton@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Arnd Bergmann <arnd@...db.de>,
        Allison Randal <allison@...utok.net>,
        Gareth Williams <gareth.williams.jx@...esas.com>,
        Rob Herring <robh+dt@...nel.org>, linux-mips@...r.kernel.org,
        devicetree <devicetree@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-spi <linux-spi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 04/17] spi: dw: Cleanup generic DW DMA code namings

On Wed, May 13, 2020 at 12:28 AM Serge Semin
<Sergey.Semin@...kalelectronics.ru> wrote:
>
> On Fri, May 08, 2020 at 10:43:24PM +0300, Andy Shevchenko wrote:
> > On Fri, May 08, 2020 at 04:29:29PM +0300, Serge Semin wrote:
> > > Since from now the former Intel MID platform layer will be used
> > > as a generic DW SPI DMA module, lets alter the internal methods
> > > naming to be DMA-related instead of having the "mid_" prefix. In
> > > addition the DW PCI-DMA specific methods and structures should
> > > be named with pci-suffexes, since we'll implement the DW MMIO DMA
> > > specific functions and objects soon.
> >
> > I think we rather leave Intel Medfield things alone.  And I think I did this already in spi/for-next in less invasive way.
>
> The naming is horrible in that module.

I agree!

> Since it's going to be a generic DMA
> driver the prefixes should be correspondingly fixed. Currently they are a bit
> random.

Unfortunately, proposed '_pci' not anyhow better. There is Medfield
stuff and non-Medfield.
Luckily Elkhart Lake uses generic approach. That's why better to have
suffix based on platform, rather than on bus.

I think what should be done here are (in a patch per item):
1) moving to new named module (w/o mid)
2) removing mid_ prefix
3) something else I forgot?

-- 
With Best Regards,
Andy Shevchenko